“恢复邦交”常见的英文表达是 “resume/restore diplomatic relations” 。
resume diplomatic relations：强调在中断后重新开始、继续外交关系这一行为。例如：The two countries decided to resume diplomatic relations after years of hostility.（经过多年的敌对状态后，两国决定恢复外交关系。）
restore diplomatic relations：侧重于使原本存在的外交关系回到正常、良好的状态，有“修复、复原”之意。例如：Efforts were made to restore diplomatic relations between the two nations.（为恢复两国之间的外交关系做出了努力 。）