Emmanuel Macron said Monday evening that “dynamically, nothing (should) be excluded” Head of French diplomacy Stéphane Séjourné said presence of French troops in Ukraine would not cross “the threshold of belligerence” This formula designates ‘the moment from which the support provided by one or more State(s) to another in its fight against a common enemy make it party(ies) to this armed conflict’ If France and its allies cross this red line in Ukraine, we will no longer be talking about military support for Ukraine but about a war with Moscow.