BRUSSELS - NATO allies on Friday publicly raised concern about a Russian cruise missile system that the alliance says may break a Cold War-era pact banning such weapons, in a show of support for Washington.The United States believes Russia is developing a ground-launched cruise missile system with a range that is prohibited by a 1987 treaty, which could give Russia the ability to launch a nuclear strike on Europe on short notice."Allies have identified a Russian missile system that raises serious concerns," the North Atlantic Treaty Organization said in a statement. "NATO urges Russia to address these concerns in a substantial and transparent way, and actively engage in a technical dialog with the United States."In a separate statement, the US envoy to NATO, Kay Bailey Hutchison, said: "Russia's behavior raises serious concerns."Russia has denied it is violating the 1987 Intermediate-Range Nuclear Forces Treaty.