During what war did Romania fight alongside Russia ?
The Allies accepted the terms late in the summer of 1916 ( " see Treaty of Bucharest , 1916 " ) ; if Romania had sided with the Allies earlier in the year , before the Brusilov Offensive , perhaps the Russian Empire , whom Romania distrusted for its occupation of Bessarabia and its unloyal and hostile behaviour after the joint effort in the war against the Ottoman Empire of 1877 , would not have lost .