By Susan Cornwell
WASHINGTON (Reuters) - The United States kept a wary eye on North Korea after the reclusive state's unsuccessful launch of a long-range rocket and President Barack Obama said on Friday Pyongyang faced further isolation if it continued to defy the international community.
The White House suspended a deal to provide significant food aid to North Korea following the rocket launch, which it had warned Pyongyang against. U.S. officials also consulted other powers, including North Korean ally China, on how to respond.
Obama said he was deeply concerned by North Korea's rocket launch, which violated U.N....