President Joe Biden said Wednesday that Russian President Vladimir Putin made a big mistake by suspending his country's participation in the last remaining nuclear arms control treaty between the United States and Russia.
These were his first comments since Putin's announcement on Tuesday about the treaty known as New START.
The US president was in Poland to reassure NATO's eastern flank allies that Washington will stand by them as Russia continues its aggression in Ukraine.
The decision is expected to have an immediate impact on the United States' ability to monitor Russian nuclear activity. However, the pact was almost dead after Moscow late last year canceled talks aimed at saving the deal, which both sides have accused the other of violating.
"It's a big mistake," President Biden said.
The US president's comments came as he wrapped up a four-day visit to Poland and Ukraine, with talks with the leaders of what is known as the Bucharest Group, which includes nine countries from the easternmost part of the NATO alliance. s. The group was formed in 2014 in response to Mr. Putin's annexation of Crimea, a Ukrainian territory. The alliance includes Bulgaria, the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania and Slovakia.
As the war in Ukraine drags on, the concern that exists among the nine countries of Bucharest continues to be great. Many fear that President Putin may take military action against them next if he is successful in Ukraine.
"You are the first line of our collective defense," President Biden told the group's leaders on Wednesday. "And you know, better than anyone, what is at stake in this conflict. Not only Ukraine, but also freedom and democracy throughout Europe and around the world," he added.
The president said that NATO's collective defense pact is "sacred" and that: "we will defend, every inch of NATO, in the full sense of the word."
The day before in front of the Royal Castle in Warsaw, President Biden warned that if the Russian aggression is not checked, it will not stop at the borders of Ukraine. "The appetites of autocrats cannot be quenched," he said. "They must be opposed."
Hungarian Prime Minister Viktor Orban, the right-wing populist leader who said last week that the European Union is partly to blame for prolonging Russia's war in Ukraine, has dropped sanctions on Moscow and arming Kiev. Orban skipped the meeting with President Biden and President Katalin Novák attended instead.
Romanian President Klaus Iohannis insisted that B9 is stronger than ever.
NATO Secretary General Jens Stoltenberg, who attended the meeting, said: "We don't know when the war will end, but when it does, we must make sure that history does not repeat itself." Pointing to Russia's past actions in Georgia and Ukraine, he added: “We cannot allow Russia to continue to undermine European security. We must break the cycle of Russian aggression."
President Biden met Tuesday in Warsaw with Moldovan President Maia Sandu, who last week claimed Moscow was behind a plot to topple her country's government using foreign saboteurs.
Nestled between Ukraine and Romania and one of Europe's poorest countries, the Eastern European nation has had historic ties to Russia but wants to join the European Union. President Biden in his remarks and approval for Moldova's request to join the EU.