Ten Things You Need to Know Today: Thursday 28 Jun 2012

The US Supreme Court has approved Barack Obama's healthcare reforms, dubbed Obamacare. The judges ruled that the "individual mandate" provision of the bill was legal. It compels young and healthy people to buy insurance and is designed to push down the cost of premiums for others. The vote has provoked a furious backlash from Republicans.

European leaders have gathered in Brussels for a summit on the fate the the euro. German Chancellor Angela Merkel held talks with French President Francois Hollande in Paris prior to the meeting, but she has already rejected the idea of pooling eurozone debt. David Cameron attends the summit with an offer to inject £1.3 billion into an EU-wide growth plan.

The Deputy Chief Constable of Surrey police is under investigation by the IPCC over claims he failed to act after discovering that the News of the World had hacked the phone of Milly Dowler. Craig Denholm was in charge of the investigation into the teenager's disappearance in 2002. Det Supt Maria Woodall, who took over the case in 2006, is also under investigation.

Tony Blair yesterday revealed he would like to return to Downing Street as prime minister, but added that this is "not likely to happen". He told the Evening Standard, which he had guest edited, that he had quit to avoid a "bloody battle" with Gordon Brown. Blair also insisted that he paid 50% tax on his post-Downing Street earnings.