On Sept. 12, Ukraine’s Foreign Ministry issued a formal diplomatic note, also known as a demarche, to Mongolia during a meeting with a high-ranking Mongolian diplomat in Kyiv. The ministry expressed deep disappointment that Mongolia, a signatory to the Rome Statute, did not arrest Russian President Vladimir Putin during his recent visit. Putin visited Mongolia in early September at the invitation of Mongolian President Ukhnaagiin Khurelsukh, which marked Putin’s first trip to an International Criminal Court (ICC) member country since the court issued an arrest warrant for him. Putin’s visit ca…