Ukraine's Volodymyr Zelensky was in Poland to highlight the important role Kyiv and Warsaw play for the security of Europe.
The new missile system, which has been developed by Czech defence company LPP, has a range of up to 422 miles, placing Moscow well within reach from Ukraine.
Russia's President Vladimir Putin has said there will be no more wars after Ukraine if Russia is treated with respect - and claims that Moscow is planning to attack European countries are "nonsense".