Ukrainian President Volodymyr Zelenskiy will seek more support from allies when he addresses the UN and meets Donald Trump, opens new tab this week, but behind the scenes Kyiv is quietly preparing for a new phase of the war in which it relies more on itself, Reuters reported.

Kyiv's hopes of winning tough new U.S. sanctions on Russia are fading, and a new pragmatism in Ukraine makes Zelenskiy's trip less fraught than some earlier visits to the United States, with lessons learnt from February's White House bust-up.

Frenetic European diplomacy and a Ukrainian expression of regret after February's disastrous meeting paved the way for a resumption of crucial U.S. intelligence sharing and weapons supplies authorised by the U.S. president's predecessor, according to Reuters.