but the british prime minster, theresa may, was warned those negotiations can't start until more progressas been made on a financial settlement. now on bbc news, it is time for click. this week, life on the ocean waves. a big cloud makes a big bang, which makes a big cloud. and climbing higher and higher, and makes a big cloud. and climbing higherand higher, and back makes a big cloud. and climbing higher and higher, and back down again. this weekend, the world's toughest sailing race begins. held every three years, the volvo ocean race sta rts three years, the volvo ocean race starts in alicante, in spain, and ends in the hague, in the netherlands. now, that doesn't actually sound very far, but in the middle there is the small matter of 45,000 middle there is the small matter of 16,000 nautical miles, taking in 12 cities 115,000 nautical miles, taking in 12 cities in six continents, and with broken masts, capsizes and icebergs almost guaranteed, this is no luxury cruise. to try and make this journey even possible, technology inevitably raise its head. these are some of the most advanced