The latest:

CNN: At least 33 dead.

Bloomberg: An organization called al-Qaeda in Europe is taking responsibility.

Times of London: Six explosions on subway trains and buses around London.

Reuters: World leaders condemn attacks.

CBS: U.S. security officials on alert. Terror alert will be raised to orange.

UPDATES:

NRO: Attacks likely part of a wider al-Qaeda summer offensive.

LA Times: G8 postpones declarations on climate change and the global economy.

CBC: However, Blair says that won’t stop the G8 leaders from continuing their work.