Super Tuesday in America saw a dozen state primary elections in the presidential nominating process.
Hillary Clinton reinforced her position as the front-runner in the Democratic race, winning Texas, Georgia, Virginia and Massachusetts.
Bernie Sanders took Colorado, Minnesota and two other states, but he remains far behind Mrs Clinton in the delegate count.
Donald Trump lengthened his lead in the Republican contest by winning most states on offer.
Ted Cruz won his home state of Texas and Marco Rubio chalked up his first win, in Minnesota.
But it looks increasingly unlikely that the party establishment will be able to trip Mr Trump.
David Duke, a former Grand Wizard of the Ku Klux Klan, backed Mr Trump for president.
Never normally lost for words, Mr Trump stopped short of denouncing Mr Duke in a TV interview,
prompting another volley of criticisms from Republicans and Democrats. Mr Trump deflected these by saying he hadn't understood the question.
Clarence Thomas, a Supreme Court justice, broke his decade-long silence on the bench
(thought to be a record) and asked questions in a case on gun rights. The audience gasped.
Many theories have been proffered for his failure to speak, but the death last month of the loquacious Antonin Scalia,
a close ally, may have left Justice Thomas thinking that the time has come for him to stick up for strict constructionism.
The UN Security Council adopted tougher-than-expected sanctions on North Korea following its nuclear test and rocket launch earlier this year.
They include mandatory inspections of all shipments to the country,
a ban on sales of aviation fuel and a halt to exports from the North of iron and coal.
But China will need to be the chief enforcer of the sanctions if they are to work.
Chinese internet companies shut down the microblogs of Ren Zhiqiang, a property tycoon.
He had used an account with 38m followers to criticise President Xi Jinping's efforts to tighten Communist Party control over the media.
China's internet regulator accused Mr Ren of publishing “illegal” messages.
A court in the coastal Chinese province of Zhejiang sentenced a Christian pastor,
Bao Guohua, to 14 years in prison for corruption and inciting people to disturb social order.
His wife was jailed for 12 years. Mr Bao's refusal to remove a cross from his church's roof had angered the authorities.
A Christian lawyer who had supported churches that erect illegal crosses was shown on local TV apparently confessing to having colluded with foreigners to stir up trouble.