The US president says peace efforts are "very much on track", a day after Russia's president declined to agree a full ceasefire.

The force would focus on providing Ukraine with air cover to keep its skies safe and a naval presence in the Black Sea to encourage trade.

The Trump administration has defunded a programme documenting the abduction of children from Ukraine.

The attacks came hours after Vladimir Putin said Russia would stop targeting Ukrainian energy sites.

The BBC's Anthony Zurcher takes a closer look at the US president's negotiation strategy with top world leaders.

The Russian leader declines to sign up to a plan that Ukraine had accepted for a month-long ceasefire.

Trump made a big deal of his conversation with Putin, but there is little to shout about, Sarah Rainsford writes.

The US president says elements of a Ukraine ceasefire have been agreed, but "much remains" to be worked on.