The new Polish Prime Minister Donald Tusk, whose pro-European government took office in December, arrived in Kiev for surprise talks on Monday aimed at rallying Western support for Ukraine. Tusk arrived in the Ukrainian capital by train on Monday morning – without prior public announcement for security reasons. Tusk said he wants to work with the Kiev leadership to mobilize more Western military aid for Ukraine, which has been fending off Russia’s full-scale invasion for almost two years. This was one of the main objectives of his visit, Tusk said. He said that Poland was “Ukraine’s most relia…