"Western elites are not hiding their goal - to inflict a strategic defeat on Russia. It means to be done with us once and for all," Putin said ahead of the first anniversary of the military intervention.
Putin said the more long-range weapons systems supplied to Ukraine, the further Moscow will push the threat away from Russian borders.
Putin added that he understood how difficult it was for relatives of Russian soldiers who had died fighting in Ukraine, and said he would provide them "targeted support" with a new special fund.
"We all understand, I understand how unbearably hard it is now for the wives, sons, daughters of fallen soldiers, their parents, who raised worthy defenders of the Fatherland."