Ship flying flags of Marshall Islands and Panama seen at Iranian port Bandar Abbas; meanwhile, another thought to be carrying Iranian crude disappears from anchorage off Singapore

Reports say $5 billion will boost 'defense capacities and strategic research,' amid sanctions and threats to Tehran's nuclear program

Each ship has a 5- to 10-foot hole near or just below water line, and American military team believes they were caused by explosive charges set by Iranians or their proxies