Andrzej Duda, the Polish president, has told the World Economic Forum in Davos he was afraid Russia was preparing a new offensive in Ukraine so it was necessary to provide additional support to Kyiv with modern tanks and missiles.
Air-defence systems such as the US-made Patriot are needed both in Poland and in Ukraine, Nato secretary General Jens Stoltenberg said on Friday in an interview for US news channel CNN.
Jens Stoltenberg, the Nato secretary general, has said the missile blast in Poland last week was likely an accident and not a Russian strike on Nato.
Jens Stoltenberg, Nato’s secretary general, said on Wednesday that Tuesday's missile blast in eastern Poland appears to have been caused by a Ukrainian air defence missile.
Russia's withdrawal from the Ukrainian city of Kherson is an important step in Ukraine's struggle to regain sovereignty and territorial integrity, Poland's foreign minister said on Thursday.
The Polish arms industry is operating at 100 percent capacity, the defence minister has said.
Polish President Andrzej Duda and Nato Secretary General Jens Stoltenberg held urgent consultations on Monday in connection with Russia's mass shelling of several Ukrainian cities.
Turkey's consent to back the accession of Sweden and Finland to Nato is an important move, a government official said on Tuesday evening.
Nato will upgrade its battle groups on its eastern flank to brigade level, and will increase its high-readiness forces to 300,000 troops from the current number of 40,000, Jens Stoltenberg, Nato secretary-general, has said.
Mateusz Morawiecki, the Polish prime minister, said the West had not done enough to defend Ukraine and urged Nato and the EU to deliver more weapons to the country that is defending itself from the Russian onslaught.