He made the remarks in an interview with LCI, Politico reported. Macron stressed that the next two weeks will be critically important in defining security guarantees for Ukraine following high-stakes peace talks."There is all the work that needs to be done beforehand on security guarantees. The next 15 days are absolutely critical for us to finalize the work with the Americans and give these security guarantees substance," Macron said.The French president, along with several other European leaders, cut short their summer vacations to join Ukrainian President Volodymyr Zelenskyy for talks at the White House, immediately after U.S. President Donald Trump’s meeting with Russian leader Vladimir Putin in Alaska on Friday.In a series of interviews with French and American media, Macron praised Trump’s decision to offer Ukraine what he called “very good security guarantees.”"The big change in recent days is that he has acknowledged the need to guarantee Ukraine's security," Macron told Paris Match.What those guarantees entail remains unclear, though Macron told LCI that "the British, French, Germans, Turks and others are ready to carry out operations, not at the frontline, not provocatively, but reassurance operations in the air, at sea, and on land."