US Secretary of State John Kerry says he is "not going to step away from our alliances" in the Middle East, and was well aware of the support Iran was providing to Houthi rebels in Yemen.
Only those versed in Iranian political custom immediately understood the symbolism of a social call made by Iran's Supreme Leader Ayatollah Khamenei.
Unlike the US, the Iranians are not releasing fact sheets about the scale of nuclear reduction because they would rather be a little vague on the compromises they've made.
The "key parameters" to a deal on Iran's nuclear programme are agreed, including restrictions on enrichment in exchange for sanctions being lifted.
A mentally-ill British grandfather is among more than 19,000 people on death row in Pakistan, according to human rights group Amnesty International.
For the Saudis, Iran - not Islamic State - is the greatest danger in the Middle East. So nuclear détente between Iran and the US will not be cost-free.
The mood music coming out of Iran nuclear talks in Lausanne may be positive, but there are more variations to be played through before a harmonious finale can be achieved.
Arab leaders announce the formation of a unified regional force to counter security threats, as conflicts rage in countries such as Yemen and Libya.