The United States said on Friday that it will deliver $820 million in new military equipment to Ukraine, including new surface-to-air missile systems and counter-artillery radars, in response to Russia’s heavy reliance on long-range strikes in the war.

The Pentagon also stated that it would deliver up to 150,000 rounds of 155-millimeter artillery weaponry to Ukraine.

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This is the 14th shipment of military weapons and equipment from Defense Department inventories to Ukraine since August 2021. Overall, the United States has contributed more than $8.8 billion in arms and military training to Ukraine.

As part of the new package, the U.S. will purchase two systems known as NASAMS, a Norwegian-developed anti-aircraft system that is also used to protect the airspace around the White House and Capitol in Washington.

The Pentagon will also provide additional ammunition for medium-range rocket systems it provided Ukraine in June, known as the High Mobility Artillery Rocket Systems, or HIMARS.

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The war launched by Russia in February has evolved into a grinding stalemate in which both sides are heavily reliant on artillery, according to Western officials and analysts. While Russia has not achieved its initial goals of toppling Ukraine’s government, it is believed to be making slow progress to consolidate control over the eastern Ukrainian region known as the Donbas.

Ukraine’s President Volodymyr Zelensky expressed gratitude to US President Joe Biden for authorising the additional security assistance package that includes air defence equipment.

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“Thank you @POTUS for your continued leadership and support of UA in its fight against the aggressor,” Zelensky tweeted.

At the closing of the NATO summit in Madrid on Thursday, Biden unveiled the security aid package.