European leaders met in London to form a plan to help end the war in Ukraine. But even potential peacekeepers face political and economic hurdles.

The US has allocated the most of any single country, $119 billion, according to the Germany-based Kiel Institute for the World Economy, which catalogues aid to the war-torn country through its Ukraine Support Tracker, focusing on government-to-government transfers.

British Prime Minister Keir Starmer has told leaders gathered Sunday for a summit on the war in Ukraine that they need to step up and continue to support Kyiv, and meet a “once in a generation moment”