The New Cold War?

These sort of things are the breezes that start cold wars?

First this.

American military chiefs have been left dumbstruck by an undetected Chinese submarine popping up at the heart of a recent Pacific exercise and close to the vast U.S.S. Kitty Hawk - a 1,000ft supercarrier with 4,500 personnel on board.

By the time it surfaced the 160ft Song Class diesel-electric attack submarine is understood to have sailed within viable range for launching torpedoes or missiles at the carrier.

Then this.

The top U.S. military commander in the Pacific said he's "perplexed and concerned" by China's last-minute decision to deny a U.S. aircraft carrier entry to Hong Kong for a previously scheduled port visit.

The USS Kitty Hawk and its escort ships were due to dock there for a four-day visit Wednesday until they were refused access. Hundreds of family members had flown to Hong Kong to spend Thanksgiving with their sailors.

"It's hard to put any kind of positive spin on this," Adm. Timothy Keating told The Associated Press in a telephone interview Thursday while flying back to the U.S. after visiting troops in Iraq. "I'm perplexed and concerned."