-- On theday after modern-Israel became a country, the armies of seven other
nearby countries rolled into Israel to make sure that it did not last long.
-- Ever since then, the governments and religious leaders in the countries
around Israel have told their people that the Jews stole their land and want
more of it, and that Israel must be wiped out. The people teach their children
to hate Jews, and the books in their schools are printed with maps on which
Israel is not there.
-- There is a large country near Israel, where nuclear (atomic) weapons
are being developed, and their president has said in public speeches that
Israel is a "cancer" that must be cut out of its place and destroyed.
-- There is a small piece of land right next to Israel where the constitution
of the government says that their job is to destroy Israel and kill the Jews.
If you lived in a neighborhood like that, and had neighbors like that, you'd
need to be strong too. You'd need to make sure that you could take care
of yourself, no matter what they might try to do, or when they might try it.
To protect their citizens and to not give up their homeland again.
Because they are surrounded by enemies.
Because of the constant attacks by terrorists and terror-regimes. See also: more about this
Hitler built up the military.
No one. Israel does not maintain forces in the Gaza Strip. Israel's security fences, guard towers, battleships, and other pieces of the Israeli military apparatus surrounding the Gaza Strip are in sovereign Israeli territory.
The ceasefire was only on the Israeli side (as usual). Rockets had been fired from Gaza at Israeli civilians (never at military targets), in a trickle, until Israel got fed up and took action, directed only at military targets.
Clandestinely, built up military capability.
army
Canada had to built up its military in order to support England's struggle in the war. Canada built up their military and political power, which brought prestige among other nations. After the war, Canada became an independent nation.
He built up his military and naval forces.
Between the various wars and Intifadas, around 15,000 to 16,000 Arabs identifying as Palestinians have died either as a result of Israeli military action, Israeli civilian action, or from blowing themselves up in Suicide Bombings during the Intifadas.
Mesopotamian military leaders had to be strong and fearless. Soldiers looked up to them to provide training and leadership that they could take with them to the battlefields.