UNITED NATIONS, July 30 - Ukraine's foreign minister said Thursday that the five countries investigating the downing of a Malaysia Airlines plane over Ukraine a year ago will try again to get U.N. Security Council approval for an international tribunal to prosecute the alleged perpetrators.

Pavlo Klimkin said in an interview with The Associated Press that a key Russian argument for vetoing the resolution to establish a tribunal on Wednesday was that it was premature and "untimely," because the results of the investigation aren't expected until October. So the five nations will try again for a tribunal then, he said.