Ukrainian officials have been asking allies for longer-range systems including the Multiple Launch Rocket System, or MLRS, that can fire a barrage of rockets hundreds of miles away.

“We’re not going to send to Ukraine rocket systems that strike into Russia,” Biden told reporters after arriving back at the White House after a weekend in Delaware.

Biden did not rule out providing any specific weapons system, but instead appeared to be placing conditions on how they could be used. Biden and his team are working on a new package of military equipment and it is expected to be announced in coming days.

The MLRS was under consideration, but nothing with long-range strike capabilities outside of battlefield use, a senior administration official said.