Russia’s reckless shelling of cities and towns across eastern Ukraine will require western nations to intensify their support of the Ukrainian government and military, Defense Secretary Lloyd Austin said Wednesday.

Shortly after those remarks, President Joe Biden backed that up by announcing the U.S. would contribute an additional $1 billion in security assistance and $225 million in humanitarian aid following a phone call with Ukraine President Volodymyr Zelenskyy.

Austin, speaking at NATO headquarters in Brussels, noted that the U.S. and its allies recently provided long-range rocket-assisted artillery. Those weapons nearly double the range of conventional artillery howitzers that have also been sent to the front lines.

Ukrainian presidential adviser Mykhailo Podolyak tweeted this week that Kyiv is desperately in need of 1,000 155 mm howitzers, 300 Multiple Launch Rocket Systems (MLRS), 500 tanks, 2,000 armored vehicles and 1,000 drones.

The request for more firepower comes amid revelations that Moscow could be increasing its own defense spending by 20% to combat a war that shows no signs of ending soon.

“Russia is using its long-range fires to try to overwhelm Ukrainian positions, and Russia continues to indiscriminately bombard Ukraine’s sovereign territory and recklessly endanger Ukrainian civilians,” Austin said. “So we must intensify our shared commitment to Ukraine’s self-defense.”

Latest developments

►Russia’s state-controlled energy giant Gazprom’s announcement that it would reduce natural gas flows through a key European pipeline by roughly 40% appears to be a political move rather than a result of technical problems, Germany’s vice chancellor said Wednesday.

►A Moscow court extended the detention of WNBA star Brittney Griner through at least July 2, Russian state-run news agency TASS reported Tuesday. Griner has been in custody since Feb. 17, accused of bringing vape cartridges containing cannabis oil into the country. The U.S. Department of State considers her wrongfully detained.

►Russia banned dozens of British media and defense figures from entering the country in response to what the country’s foreign ministry alleged was the British media’s skewed portrayal of Moscow and its actions in Ukraine.