As an answer to the Russian drills, neighbouring Ukraine said on Friday it would also conduct military exercises, which it hoped NATO partners would join, as an insurance against any resulting escalation on its eastern borders.
Relations between Moscow and Kyiv have been tense since 2014, when Russia annexed Crimea from Ukraine and backed a separatist armed uprising in eastern Ukraine that remains active.
Clashes between Ukrainian troops and Russian-backed forces have killed more than 13,000 people since 2014, despite a ceasefire agreement struck in 2015.
＇This asymmetric response will show the readiness of the armed forces of Ukraine to give a worthy rebuff to any attempts by the Russian Federation to exacerbate the situation or start large-scale hostilities,＇ Ukraine's Defence Minister Andriy Taran said.
Iran had signed a ceasefire with Iraq on July 20, 1988.