NATO Secretary General Mark Rutte speaks to the media during his visit to the multinational battle group at the Novo Selo training ground, Bulgaria, December 19, 2024. REUTERS/Spasiyana Sergieva

LONDON (Reuters) -The new sanctions imposed by the United States on Russia will put more pressure on President Vladimir Putin, who is running out of money, troops and ideas, NATO chief Mark Rutte told reporters on Friday.

"Our support to Ukraine is working," Rutte said, adding that Putin is making marginal gains on the battlefield in Ukraine.

Rutte travelled to London to meet with leaders of the "Coalition of the Willing", a group of countries supporting Ukraine.

(Reporting by Inti Landauro and Sudip Kar-Gupta;Editing by Lili Bayer)