Further military involvement at the southern frontiers ceased being feasible, as the forces were needed more urgently in the north.

It lay on Rus civilization's southern frontier with the steppe.

It exercises limited control over a stretch of empty desert along the territory's eastern and southern frontiers.

Wilkinson was transferred to the southern frontier in 1798.

The storm caught up with Qi lin just after she had crossed the southern frontier.

It is formed from a huge granite ridge that once formed the southern frontier of the country.

He crossed the southern frontier of the northern empire.

Later a new fortress was built by royal forces to guard the southern frontier.

Outside, full night had descended over the rugged steppe of the southern frontier near the Afghan border.

According to one such report Richard's chief concern in the autumn of 1178 was with his southern frontier.