"Head of the Office of the President of Ukraine Andriy Yermak had a phone call with National Security Advisor to the President of the United States Jake Sullivan ... The Head of the Presidential Office emphasized the importance of providing the Ukrainian defense forces with the additional weapons and ammunition as soon as possible," the office said in a statement released on Monday.
Yermak also briefly informed Sullivan about the current situation at the front and thanked the United States for its continued "strong support for Ukraine," the statement read.
In February, the Ukrainian government started negotiations with its allies on the supplies of longer-range missiles and jets, as well as additional ammunition to prepare for an offensive this spring.
Accordng to NATO Secretary General Jens Stoltenberg, NATO allies have so far delivered military support to Ukraine worth 65 billion euros ($70 billion), a lot from that comes from the United States.
The Kremlin has repeatedly warned against continued arms supplies to Kiev and further escalation that could lead to the direct involvement of the US and NATO in the conflict.