A look at US President Joe Biden's first trip abroad, which included a very important first stop at the G7 summit in the United Kingdom. Did he convince allies that "America is back" and ready to resume its leadership role in global affairs? And if so, does it even matter if Americans still need to be convinced that US engagement in the world is vital? In this episode of GZERO World with Ian Bremmer, former US Ambassador to NATO Ivo Daalder weighs in on Biden's performance and the way forward for the US and its closest friends.

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U.S. Army soldiers take part in a U.S.-South Korea joint river-crossing exercise, which is a part of the annual Freedom Shield joint military training, near the demilitarized zone separating South and North Korea, in Yeoncheon, South Korea, March 14, 2026.
REUTERS/Kim Soo-hyeon

The decision deals a blow to a decades-old alliance: South Korea relies heavily on US deterrence against its nuclear-armed northern neighbor and hosts 28,500 American troops.

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Russia may be on the back foot in the war, but life near Ukraine’s front lines remains brutal. On GZERO World, David Miliband talks about the human cost of war and why winning on the battlefield means nothing if Ukraine can’t sustain its people.