In fact, they are held responsible for their actions by an increasingly hostile world, but they still do their best to avoid responswibility. This means no apologies to anybody. This implies fault. Instead, Israel may simply "regret" the deaths of their Egyptian victims. This merely implies sympathy.
Knesset approves 2015-16 state budget in first reading (Haaretz)
from the article: Israel must act quickly to end the crisis with Egypt