1.   The possibility of a nuclear exchange continued to hang in the balance.

2.   And if things go even more wrong, this capital city could be ground zero in the first nuclear exchange in history.

3.   And the risk of a miscalculation that could trigger a nuclear exchange hangs like the sword of Damocles over the region.

4.   Both have promised repeatedly to explore confidence-building measures to help avoid a nuclear exchange by miscalculation.

5.   A misinterpretation of who was targeting whom could have led to a nuclear exchange between the two subcontinental enemies.

6.   A nuclear exchange would be far less personal, far more deadly.

7.   But despite this, fears are growing that the fragile standoff may yet degenerate into a nuclear exchange.

8.   But India and Pakistan have suddenly made the specter of a nuclear exchange seem less remote.

9.   But India, which could win another conventional war with Pakistan, surely wants no nuclear exchange.

10.   Even with their advantages, the United States and Soviet Union came close to a nuclear exchange several times.