WARSAW, Poland (AP) — Britain’s defence secretary says his country will deploy a missile defence system to NATO ally Poland in reaction to Russia’s invasion of Ukraine.

During a visit to the Polish capital, Defense Secretary Ben Wallace said the United Kingdom is sending the Sky Sabre medium-range anti-air missile system to Poland with about 100 personnel. He said the move is “to make sure that we stand alongside Poland in protecting her airspace from any further aggression from Russia.”

The decision comes days after Russian missiles struck a military base in Yavoriv, Ukraine, just a few miles from the border with Poland.

The British promise of military support also comes as nearly 2 million of the more than 3 million refugees to flee Ukraine have arrived in Poland.

“As a NATO ally and a very old ally, it is very right that Britain stands by Poland as Poland carries much of the burden of the consequence of this war and stands tall and brave to stand up to the threats from Russia,” Wallace said.

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