U.S. Senator Benjamin Cardin (D-MD) attends a news conference in Hanoi May 28, 2014. Cardin is in Hanoi to hold discussions with Vietnamese leaders regarding maritime tension with China after China ... more 
U.S. Senator Benjamin Cardin (D-MD) attends a news conference in Hanoi May 28, 2014. Cardin is in Hanoi to hold discussions with Vietnamese leaders regarding maritime tension with China after China deployed a giant oil rig in the disputed South China Sea early this month. Vietnam has said the rig is in its 200-nautical mile exclusive economic zone and on its continental shelf. China says it is operating within its waters. China claims almost of the South China Sea, rejecting rival claims to parts or all of the oil- and gas-rich waters from Vietnam, the Philippines, Taiwan, Malaysia and Brunei. REUTERS/Kham (VIETNAM - Tags: POLITICS) less 
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Reuters | Photo By KHAM / REUTERS
Wed, May 28, 2014 5:44 AM EDT