The ruling Liberal Democratic Party plans to urge the government to develop the ability to strike enemy missile bases amid North Korean nuclear and missile threats, a draft outline of a party proposal on security issues showed Thursday.

The LDP is hoping to finalize the proposal by May so that it will be reflected in the country's defense buildup guidelines to be reviewed at the end of the year.

According to the draft, the LDP said Japan must beef up its defense to counter "the most critical situation" since the end of World War II, citing North Korean threats, China's maritime assertiveness and Russia's military buildup on disputed islands off Hokkaido.