Otherwise, it might be recognized as a technically formal declaration of domestic war.

否则，它很可能被认为是一项内战的技术性正式声明。

youdao

The problem here was that it was not clear that had he asked for a formal declaration of war he would have gotten one.

FORBES: What Happened To The American Declaration Of War?

It has announced a formal declaration of war on the South, and pledged to reopen a mothballed nuclear reactor in defiance of UN Security Council resolutions.

BBC: North Korea warns foreign embassies to prepare escape

North Korea has also announced a formal declaration of war on the South, and pledged to reopen a mothballed nuclear reactor in defiance of UN Security Council resolutions.

BBC: 'No plans to withdraw' UK diplomats from North Korea