A coalition formed between nations during a period of war to achieve mutual goals.

युद्धकालीन संधि

English Usage: The wartime alliance between the two countries proved crucial in defeating their common enemy.

Hindi Usage: दो देशों के बीच की युद्धकालीन संधि उनके सामान्य दुश्मन को हराने में महत्वपूर्ण साबित हुई।