On Monday, US President Joe Biden will receive NATO Secretary-General Jens Stoltenberg for talks at White House.
This comes a month before the bloc summit that will especially discuss Ukraine file, according to presidential spokeswoman Karen Jean-Pierre.
The meeting with Stoltenberg, whose term will expire in October, is aimed at preparing for upcoming NATO summit, set to be held in Vilnius.
The summit will discuss "allied support for Ukraine in the face of Russia's aggressive and brutal war".