Statements out of Washington and other Western capitals suggest a shift from engagement to confrontation with Iran over its nuclear programme. "What we are going to be working on over the next several weeks is developing a significant regime of sanctions that will indicate to them how isolated they are from the international community as a whole," President Barack Obama told journalists earlier this week. The president sounded not unlike his predecessor George W Bush, who worked for years to contain Iran, a sign that Mr Obama's policy to engage with the Islamic Republic has failed. The question now is...