Moscow mayor barred entry to Ukraine for claiming its city belongs to Russia

Ukraine on Monday barred the powerful Moscow mayor from entering the country in the future for reportedly suggesting that it should cede a key city to Russia.

The move further strains already tense relations between the two ex-Soviet neighbors, as Moscow bitterly opposes Kiev's push to join NATO.

Ukraine's State Security Service said in its statement that Moscow Mayor Yuri Luzhkov's comments were undermining national interests and the country's territorial integrity. The agency also said it was looking into allegations that Luzhkov was involved in money…