Israel is 1/10th of the population of Egypt and survived the Arab War where it was attacked by Egypt, Palestine, Transjordan, Iraq, Syria, Lebanon, Saudi Arabia

Israel is 1/10th of the population of Egypt and survived the Arab War where it was attacked by Egypt, Palestine, Transjordan, Iraq, Syria, Lebanon, Saudi Arabia and Yemen. And the Arabs received Soviet support. Also the US lost at Vietnam. The Soviets lost at Afghanistan and Russia is a shadow of what the Soviet Union was. Total population means nothing as it ignores that Russia demographics is skewed towards old women and that a large share of the youngers are from ethnic minorities. Russia is struggling to replenish losses and haven't mass conscripted. And sheer numbers alone aren't enough to win a war. Equipment, training, moral, tactics and logistics are also important.