males age 16-49: 17,844,536
females age 16-49: 17,312,808 (2010 est.)
Manpower reaching militarily significant age annually:
male: 636,558
female: 604,658 (2010 est.)
Military expenditures:
2.5% of GDP (2006) country comparison to the world: 60
Transnational Issues ::Iran
Disputes - international:
Iran protests Afghanistan's limiting flow of dammed tributaries to the Helmand River in periods of drought; Iraq's lack of a maritime boundary with Iran prompts jurisdiction disputes beyond the mouth of the Shatt al Arab in the Persian Gulf; Iran and UAE dispute Tunb Islands and Abu Musa Island, which are occupied by Iran; Iran stands alone among littoral states in insisting upon a division of the Caspian Sea into five equal sectors