South Korea flexes its military muscle in a live fire drill on Friday.<br/> <br />Artillery units carried out the exercise using missiles, rockets and cannon, simulating a combat situation.<br/> <br />The show of military might comes amid heightened tensions on the peninsula after North Korea conducted its third nuclear test on Tuesday despite international warnings.<br/> <br />In North Korea, thousands rally in celebration of the test.<br/> <br />Pyongyang claims the test was an act of self-defence against "U.S. hostility" and threatened stronger steps if necessary.<br/> <br />They've also threatened to attack South Korea if Seoul joins a new round of tightened U.N. sanctions against them.<br/> <br />The test drew international condemnation from around the world, including China, North Korea's only major ally.
