Russia warned Ukraine against integration with NATO on Tuesday, saying Kiev's previous attempts to move closer to the bloc had strained ties with Russia and caused problems between Moscow and the defence alliance, Reuters reported. "(Past attempts) led to a freezing of Russian-Ukrainian political contacts, a headache between NATO and Russia and ... to a division in Ukrainian society," the Russian Foreign Ministry said as NATO foreign ministers gathered for a meeting in Brussels. It warned that future economic ties between Moscow and Kiev "will largely depend on the actions Ukraine takes in its foreign policy".