Derec
Contributor
Not necessarily on head coverings.Yes, head covering and modest dress is the custom for meeting the Pope at the Vatican.
Although dressing in black does seem to be customary.
Possibly for some. But that photo of the Clintons grinning it up with Arafat does not qualify. He was definitely not a "religious leader".And that may be the differences in the various photos Derec posted - what was the context for each. If those photos were taken in connection with meeting religious leaders, that is often a different protocol than meeting political leaders, regardless what is the general custom in the country