1.   An open breach over NATO would have serious consequences.

2.   First, he says, comes an open American breach of the ABM Treaty, followed by a decision to grant NATO membership to the Baltic states.

3.   Muttering followed, though no open breach.

4.   More important, it would risk an open breach with U.S. allies South Korea and Japan, which want both a stable and a non-nuclear Korean peninsula.

5.   In Seoul, the South Korean Foreign Ministry said earlier it would bring the submarine incident to the UN Security Council as an open breach of the armistice.