(Reuters) – North Korea has rockets that can hit the U.S. mainland, it said on Tuesday, two days after South Korea struck a deal with the United States to extend the range of its ballistic missiles.

North and South Korea have been technically at war since their 1950-53 conflict ended in a truce, not a peace treaty, and regional powers have for years been trying to rein in North Korea’s nuclear weapons program.

Reclusive North Korea is believed to be developing a long-range missile with a range of 6,700 km (4,160) miles) or more aimed at hitting the United States, but two recent rocket tests failed.

Its neighbors fear North Korea is using rocket launches to perfect technology to build a missile capable of delivering a nuclear warhead to the United States.

North Korea’s National Defence Commission said in a statement that the country was prepared to counter any U.S. military threats, its KCNA news agency said.

“We do not hide (the fact) that the revolutionary armed forces … including the strategic rocket forces are keeping within the scope of strike not only the bases of the puppet forces and the U.S. imperialist aggression forces’ bases in the inviolable land of Korea, but also

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