this is bbc news, the headlines: g7 leaders meeting in canada have been discussing import tariffs imposed by president trump. following a bilateral meeting with donald trump, the french president said there's willingness to find an agreement. the us special counsel, robert mueller, has filed new criminal charges against president trump's former campaign chairman, paul manafort. he and a former aide are accused of obstructing justice by tampering with witnesses. theresa may has rejected criticism the foreign secretary is undermining her after borisjohnson was secretly recorded saying the government lacked guts in its negotiations with the eu. in a few moments it'll be time for newswatch. but first, here's click. the new adidas telstar 18. i wanted to find out what goes into the design behind this, so i've come to loughborough university to find out. this year's design is a model re—version of the iconic adidas ball from the 1970 world

cup, the telstar. but if you thought this was a case of aesthetics, think again. loughborough university have been researching for adidas for almost 20 years, and their rigorous testing facilities offer findings on how the ball moves and reacts in different situations. hi, andy. hi, kat. first up, the team use a roboleg to recreate the moves the players make over and over again at different speeds and powers. we have a compromise here between the fluidity and flexibility of a human player but the repeatability of a machine. it needs to be a robot because even the best player in the world cannot kick a ball the same way twice. yeah. if we want to know how a ball will respond, we need the robot. let's see it in action then. i'm intrigued already that the foot appears to be in front of the ball. three, two, one... woah! ok, so it's fast. so, from our point of view, it would be understanding how long the boot is in contact with the ball, how the ball deforms,

how it stores the energy, how it recovers that energy, and then that results in this sort of forward velocity and the spin that's imparted onto the ball into its flight. but what we've just seen in the roboleg really has to make sense in terms of the players. and so capturing what a player does when they kick a ball in a lot of detail to give us the inputs we need to control the kicking leg is absolutely vital. so down here we have a motion capture space where we can actually capture a player kicking a ball in all the detail that we need. as well as robotic legs and motion capture technology, the team here work on computer simulations of footballs to try and figure out how they will respond before they're physically made. we are simulating certain aspects of the ball. in this particular case, it's the mechanical properties

of the ball, how it performs under certain kicks or with collisions on different surfaces. perhaps modelling the flight might be possible at some point in the future, but, for now, the way do that is to look in the wind tunnel and do experimental aerodynamic studies on real prototype balls. if i first show you something of the scale of what's involved in a tunnel like this. so, if we come outside, and you get a sense of the scale. so this is the air inlet, and then expelled out through this vent here to similate the speeds that the player will kick at. wow, i was not expecting this. two goalkeepers who have played friendlies with the new telstar 18 have already complained about the design. spain's david de gea said it was "strange," and his teammate pepe reina called for it to be changed. whether the world cup is the right time to focus on technological changes has been suggested, when players just want to perform at the top of their game. whether fans have anything to say about it will be seen when games start on the 14th.

that was kat. 0k, ball done. but it's not just about what we kick. like many sports these days, data and technology are seeping into every part of the game. now, fifa has been notoriously slow in allowing technology into football, but this will be the first world cup where teams will be given tablets to access data and analytics in—game. does that mean the data analysts will become the new star players? well, we sent paul carter to fifa to find out. at this year's world cup finals in russia, data is set to play a bigger role than ever before. like it or not, data is already an integral part of modern football. you can't watch a televised game without being bombarded by all kinds of statistics. for the first time, fifa are providing an all—in—one technical package so technical staff can analyse data throughout matches in real—time.

the snappily titled electronic tracking and performance system — or etps — will provide data on player metrics, such as distances run, speed and position information. crucially, each of the 32 countries competing in the tournament will be provided with two tablets, one for a data analyst in the stands, who will be able to communicate with the second device user on the bench, possibly a coach or assistant manager. we are using an optical tracking system. so we have optical tracking cameras in all of the stadiums. we know where the players and the ball are at any time of the match. we have different metrics available to the analysts, and it's up to them to decide how they want to use it. with resources available for technology differing between countries, fifa hopes this technology will bridge the day between countries, fifa hopes this technology will bridge the data divide.

a lot of the teams already use data. we are expecting a lot of the teams coming to russia to bring their own setup. but we want to at least offer the same to all teams. in the fifa system, the data analyst will have access to a tax on lap, allowing them to add drawings over a live video field. stills can then be sent to the dugout. with goalline technology, video assistant referees, and now disco at this year's world cup looks to be the most advanced ever. with the technology, what is the risk of losing the real spirit of the game? the role of the data analyst is simply to just... to again support the coaching decisions. but i think there are some key insights they can be found in the data. but football will always be 22 players on the pitch and the coach will always be the one making the decisions.

at the end, what technology is really for is only to support. at the end, the 22 players plus the referee, they are the main actors. 90 minutes. so that is the excitement. i think technology can only add additional help, optimise processes, optimise or providing additional information — that is what technology is about. i am certainly nowhere near ready to head to a football pitch, i need some sort of training first. but luckily we have come across this robotic leg which aims to help. i can see what the first problem is. this ur3 robot, originally built forfactory work, has already got its footy boot on. the idea is that it can repeat a human‘s movement, so they can be watched back and learned from,

or it could be copying and teaching to kick of a star player from anywhere in the world. so here we have the setup. a kinect which will track the human‘s movement, and the robot should be able to replicate them, and we have a goal, and we can't do it without one of these. that's the theory anyway, but it didn't gauge the angle of my foot very well, and even i know you are not meant to kick the ball with your toe. but i did still need a little help from a human expert to understand what else it was suggesting i did wrong. if we look closer to the robotic leg, we can see the ankle here is very flexible. so it's actually copying every movement you are doing. so the first problem you have got is, when you are kicking a football you have to open your arch. i followed the advice, it went to the right point of the net, i'm almost a professional! i've made it to an actual

football pitch, albeit a five—a—side one, and i'm joined by the click team, what you think of our kit? good, aren't they? i need to do a bit more practice. they are kicking the ball around the old —fashioned way that i've a smart football here, and i've got an app with some augmented reality built in. i've never done this before in my entire life. and i wanted to speed it up. 0k, toe—taps. dribble up runs you through training suitable to your ability. after placing the ball in position the app will scan it and assess your every move. it's all gone red, i think i'm doing it wrong. i'm not sure this isn't footbal! i've never seen anyone train for football by doing this before. strangely, it didn't seem to think i had done too badly.

i'm assuming these grades are for trying hard, because clearly i was absolutely ridiculous. it was quite fun, but i'm not sure i really exercised any sort of skills, the app works beautifully, it's lovely to look at, great instructions, but i don't think i was born to play football. now i've the moves, or not, it's time to learn some tactics. i need to actually be able to play the game. some mixed reality is here to help. this is soccer training on the microsoft hololens, teaching the rules through a mixed reality game, a lot of words, and questions to check you've been paying attention. there's some text but i can't actually read the text properly. it's not quite the right position. there's the goalkeeper, and it explains the offside position. the premise is good, i like the virtual players running about, but it feels like hard work to watch because naturally you want to watch the people, but you need to be actually reading the words. so i tried to kick a ball around, thinking about everything a robotic

leg, a smart football and microsoft hololens experience had taught me. but through no fault of the tech, i'm still monumentally useless. stephen, look over there! 0h! i had to find some way! that's it for the shortcut of our world cup show. the full—length version is up on iplayer right now. next week, we're going to be in the united states for the e3 video game show in los angeles and elsewhere in the country too. in fact, by the time you see this we'll already be there tweeting @bbcclick so join us there tweeting @bbcclick so join us there and see what we're up to. thanks for watching, see you in the states. to watch as the news reports from around the world for 75 years, we ask its boss what they are doing to fight fake news. and upstaged by little pigs, carol kirkwood struggles to focus on the weather forecast. first, the week has ended

with two prominent racketeers in the cabinet apparently flexing their muscles. on thursday, bbc news was reporting that david davis was threatening to resign the. he didn't and on friday this elite excerpt from a speech by borisjohnson emerged. simonjessop had simon jessop had this simonjessop had this response: it was the latest in a long—running

transport saga. a third runway at london's heathrow airport. the government finally gives the go—ahead, saying it will help the uk fright after brexit. after almost two decades of the transport secretary said the controversial ru nway secretary said the controversial runway would be in the national interest. one viewer rang us that this response to the days coverage. why is heathrow airport responding to make receiving rolling it news all day long? 35 million of us don't live anywhere near it. i don't care if it is there are already is an there. this is pure london based news, which is a big problem with the bbc. nearly all of our news is london—based. the bbc. nearly all of our news is london-based. after last week 's comments of the coverage of the irish referendum on abortion, it attracted attention following an item on wednesday's outside