The Pentagon has directly pressured NATO allies to tone down public criticism of Russia, three sources told Reuters, in a previously unreported push that has unsettled European officials.

The move follows President Trump's signal that a meeting with Vladimir Putin is imminent and that Washington is weighing easing sanctions on Moscow.

Why it matters: a US defense establishment muting European pushback on Russia would narrow NATO's European members' room to pressure Moscow, reshaping alliance cohesion and the leverage Ukraine and its backers hold heading into any negotiation.