TorontoWASHINGTON, Jan 17 Canada has advised its citizens not to travel to Ukraine unless absolutely necessary. «Avoid unnecessary travel to Ukraine due to ongoing Russian aggression and military buildup in and around the country,» reads a recommendation on the Government of Canada website. .jpg» />The Germans blamed Ukraine for tensions in EuropeRussia denies the aggressive plans attributed to it in the West against Ukraine and the presence of its troops on the territory of a neighboring country, including the Donbass.