French Prime Minister Emmanuel Macron was left convinced that “the worst is yet to come” with the Russia-Ukraine war after speaking with Russian President Vladimir Putin in a lengthy phone conversation on Thursday.

A senior Élysée Palace official told reporters following the 90-minute phone conversation, which Putin initiated, that a diplomatic breakthrough is nowhere in sight. It was the third call between the two leaders since Russia invaded Ukraine last week.

Macron, in fact, believes “the worst is yet to come.”