Oman
Its part of Oman
The edge of the Musandam Peninsula is controlled by OMAN, but some of the "foot" of the peninsula, especially on the western side, is controlled by the United Arab Emirates.
Oman
i dot know
Saudi Arabia
Ras Musandam is in Oman.
Saudi Arabia controls most of the peninsula.
Dibba is 42.7 kilometres (26.6 miles) from Musandam.
On which peninsula?
Approx 500KM, but you will have to cross the Omani borders twice, because they are physicly seprated by another country.
Spain is the largest country on the Iberian Peninsula.