According to Wikipedia the IDF has about 169k active troops and 465k reserves. 300k troops would be 50% of all Zionist armed forces, assuming total mobilization. Even then, that only leaves half the IDF to stare down Hezbollah in the north, keep a lid on the West Bank, and so forth.
Given how difficult it would be to call up every single reservist in 3 days, I think it's more likely that 300k is the total number of mobilized IDF troops, not just those preparing to beseige Gaza.
According to Wikipedia the IDF has about 169k active troops and 465k reserves. 300k troops would be 50% of all Zionist armed forces, assuming total mobilization. Even then, that only leaves half the IDF to stare down Hezbollah in the north, keep a lid on the West Bank, and so forth.
Given how difficult it would be to call up every single reservist in 3 days, I think it's more likely that 300k is the total number of mobilized IDF troops, not just those preparing to beseige Gaza.