President Vladimir Putin said on Thursday that Russia would never bow to pressure from the United States or any other country, and cautioned that the response to any strikes deep into Russia would be very serious and overwhelming.

Putin vowed to continue"dialogue" after his US counterpart Donald Trump on Tuesday shelved a summit between the two leaders but vowed a potentially "overwhelming" response if Ukraine gets and uses US Tomahawk missiles.

"Dialogue is always better than confrontation or any disputes, and especially war. We have always supported the continuation of dialogue," Putin told journalists.

But if Russia was attacked with US Tomahawk missiles, which Ukraine seeks, the response would be"very strong, if not overwhelming. Let them think about it," he added.

The statement came in response to a question about a Wall Street Journal report that the Trump administration has lifted a key restriction on Ukraine's use of some long-range missiles provided by Western allies, and remarks by Ukrainian President Volodymyr Zelensky about domestic missiles with a range of 3,000 km (1,900 miles).

Asked about recent sanctions from the US targeting two major Russian oil firms, Putin said the levies are an"unfriendly" act and "will have certain consequences, but they will not significantly affect our economic well-being". Russia's energy sector feels confident, he said.

"This is, of course, an attempt to put pressure on Russia," Putin said."But no self-respecting country and no self-respecting people ever decides anything under pressure."

Putin added breaking the balance in the global energy markets could lead to a hike in prices that would be uncomfortable for countries such as the United States, especially given the internal political calendar there.