the head of the international monetary fund is in the ethiopian capital christina god welcome the country's decision to devalue the currency by fifteen percent in october. that god added that despite a positive global trend and there are seventeen countries on the african continent that senior incomes go down not up take a listen. one who will say that the sun is shining on the global economy they all too manyy coununtries thatt also left behind on a per capita basi. and with nearly we have to address that particular. coconcerns and their particular fundamentals to see how we can all help move them t towards a better more sustainanable o one becauset grows going forward. let's take a look at some of the other stories are tracking fear now and had bosseses chief operating officer will be leading the company in february. that'll he's advocate she stepping down off of the border. back his state to take over as chief executive once tom anders leaves in nineteen nineteen. and i was able to

christina aguilera! >> hi, guys. hi. >> oh my god. can i hug you? tina aguilera's house. >> welcome. >> where do we go? >> let's go hang out. >> reporter: once everyone settles in, magda tells christina it was her song all those years ago that gave her the strength to hold her baby boy for the first time and raise him to know how beautiful he is. >> christina has one more surprise for you. >> oh-oh. >> what? >> she's actually going to sing the song. >> really? >> wow. >> are you ready for this? >> reporter: this time, not for an audience of millions. but for a family of four. for whom this song has meant so much. ♪ i am beautiful no matter what they say ♪ ♪ words can't bring me down >> reporter: and the whole family was back in los angeles for the premiere of the movie "wonder." as they walked the red carpet, we were reminded of those words russ wrote in his birthday letter to nathaniel. you have shown me strength i never knew could exist. you even taught me to accept life with a smile. for "nightline," i'm elizabeth vargas in los angeles. >> this sp

christina was on her way to work. what's in your mind with all this going on? this is where you work? >> i believe in godthat's all that matters. if you all don't believe in no god, you believe in god today. >> reporter: four port authority police officers were on duty. >> they made the decision to get on top of him and restrain him. one of the officers actually removed the device off of his person before he could further detonate it. >> reporter: the bomb was built from a pipe about 12 inches in length rigged with a nine volt battery and a wire that came from a christmas light. >> we know that they have been used as detonators in many instances. many, in fact, have used those either to detonate the bomb or used them in another location. >> reporter: people quickly evacuated. nypd locking down the scene checking for other possible devices. >> you have to assume that he was going to a much more crowded area to make a statement. you also have to assume he was going to kill himself if he was going to be a suicide bomber. what happened is the bomb did not fully detonate. and that's why he's still alive. >> i