having to do with allies and fighting against other countries
Deterrence
the allies have more militeristic abilities and strength
If you didn't have a good, strong military, you wouldn't get any progress done, and you would lose all of your soldiers.
A nation cannot protect it's economic strength without a equally strong military. Nations of the free world during the cold war that had strong economic strength but weak or no militaries were successful...only because the US military protected them.
having to do with allies and fighting against other countries
military defence is important because without them, Singapore wont be so strong now.
Major Allies (full military participation)BelgiumSerbiaFrench EmpireRussian EmpireBritish EmpireItalyRomaniaUnited StatesMinor Allies (limited military participation)MontenegroJapanPortugalGreeceAlbaniaBrazilArmeniaNepalSiamSan MarinoChinaNominal Allies (cooperated with the allies, but had no military role)AndorraBoliviaCosta RicaCubaEcuadorGuatemalaLiberiaHaitiHondurasPanamaPeruUruguay
Finland and Estonia have some military cooperation status with Sweden. Strong ties with Norway and Denmark also exist.
El Salvador are mostly poor because of so many gangs, not many allies, and not a strong military.
Deterrence
The Allies had greater miltary strength and size.
Its own military ability, and its ability to harness the military forces of its allies to produce an army strong enough to take over Italy, then defeat rival Carthage, then take over the Greek east.
In Sparta the most important part spartan life was developing a strong military. <3 :)
The fact that they were both allies and enemies to the Roman force, whose military of as the most efficient killing machine in the past ages. This may not be answer you're looking for, however. :P
The USA is currently the most important (both financially and politically) supporter of the State of Israel. The two nations have strong bilateral trade ties, share high-level strategic intelligence, exchange military technologies, and pioneer new peacetime technologies together. They are strong allies and it is unlikely that they will be pushed into a confrontational situation.
He always allies himself with strong people.