he nearly did with his plans to assassinate assad, the attempt at regime change in venezuela and the assassination of soleimani, but more importantly, he didn't end any.  switzerland didn't invite them. they said theoretically russia should be involved, but didn't formally invite them as ukraine didn't want them involved > ukrainian president volodymyr zelenskyys government didnt want russia involved, and the swiss  aware of moscows reservations about the talks  didnt invite russia. the swiss insist russia must be involved at some point, and hope it will join the process one day.
United States