In 2009, newly elected President Barack Obama gave Vice President Joe Biden responsibility for helping to wind down the war in Iraq. As is his habit, Biden struck up a telephone relationship with President Nouri al-Maliki. But this week, Biden put in a call to a different number. The man he called this week is Haider al-Abadi, chosen by Iraq’s President to become that country’s new Prime Minister. Evan Osnos wrote about Biden’s telephone habits as part of a lengthy profile for the New Yorker magazine.