'Ukraine incursion a 'real dilemma' for Putin': Biden

Ukraine's military incursion into Russia has "created a real dilemma" for Russian President Vladimir Putin, President Joe Biden said on Tuesday, adding that US officials are in constant touch with the Ukrainians about the move.

About 1,000 Ukrainian troops rammed through the Russian border in the early hours of Aug. 6 with tanks and armored vehicles. A US official said late on Tuesday that the goal of Ukraine's Kursk incursion appears to be to force Russia to pull troops out of Ukraine to defend Russian territory against the cross-border assault.

Answering questions from reporters upon arrival in New Orleans, Biden said he has been briefed every four to five hours for the last six to eight days on Ukraine's action.

"It's creating a real dilemma for Putin," he said in his first substantive comments about the operation, which appeared to have caught the Russians off guard.

The US has provided billions of dollars of weaponry to Ukraine intended largely for defensive purposes, as Ukraine tries to repel the Russian invasion launched in February 2022.

Biden in May authorized Kyiv to launch US-supplied weapons at military targets inside Russia that are supporting an offensive against the northeastern Ukrainian city of Kharkiv.

The White House said Ukraine did not provide advance notice of its incursion, which took place in the Kursk region of Russia. Russian forces on Tuesday struck back at Ukrainian troops with missiles, drones and airstrikes.

White House spokesperson Karine Jean-Pierre, speaking to reporters aboard Air Force One, said Washington had no involvement in the operation.

“We had nothing to do with this," she said.

"We have no involvement. We’ll continue to have conversations with the Ukrainians about their approach, but it is really for them to speak to," she added.

Putin has said he believed Ukraine's operation was aimed at improving Kyiv's negotiating position ahead of possible talks and slowing the advance of Russian forces along the front.

US officials say the objectives of Ukrainian President Volodymyr Zelenskiy remain to be seen.

"We’re trying to figure out exactly what they are doing and the goal here, and it’s still not 100% clear," said a US official.