Zelenskyy has received an official welcome from the Polish president Andrzej Duda on a visit to Warsaw. Poland has been a close and vocal ally of Ukraine.
Warsaw has provided extensive military support, and Duda has just announced that Poland is to supply Ukraine with 14 MiG fighter jets.
Military analysts are expecting Ukraine to launch a spring counter-offensive in the near future. Newly delivered tanks and longer-range rockets supplied by western allies may provide an edge. The government in Kyiv say it appreciates that assistance - and stresses that its goal its regain control of all its territory.