with their navy they can't effectively block sea lanes.
with our air force and air defence, they would be shot down
before they can aim.
with their army, we are out of range to their artillery.
they haven't bought Scud.
But suicidal maids in water tanks is scary....imagine when 100
maids climb into the tanks in 100 block of HDB all
over Singapore....singaporean would blame the government and
oust PAP, the PRC would take over, more singaporean would migrate,
or run to OZ, and even those who cannot defend singapore also don't
fight for singapore....wah lau....

Let me refresh your knowledge:
In Sukarno's era, Indo received limited American assistance from
1945-61. This stopped at about the time he started Confrontation.
In return for political support, he received Soviet gun destroyers,
attack boats, aircraft, 2 submarines and FROG/Scud missiles. It
only got stronger when American support resumed 1965 onwards.
These were a powerful force which if well employed could have
brought Singapore and Malaysia to their knees. Australia was
threatened enough to maintain powerful air forces to bomb the shit
out of Jakarta.
The 2 Whiskey class submarines for instance sunk with all hands
within a few years. Thankfully their culture of maintenance was so
poor, none of these weapons lasted long. But long enough for his
successor Suharto to have invaded a few places to commit the
trademark Indonesian atrocities there.
http://en.wikipedia.org/wiki/Suharto#Foreign_policy.2C_Irian_Jaya.2C_East_Timor_and_Aceh
http://en.wikipedia.org/wiki/Indonesian_occupation_of_East_Timor#Indonesian_hegemony
As for the mains which are the real danger. Think they will kill
themselves? They will kill their employers with chopper and dump
their children in the water tank. Just look at them in the fucking
face. You know wild and savage they can be.
Even if before the war SG orders the maids to be sent back, by
then some would have gone siao over losing their rice bowl and have
gone on a bloody killing spree. Before raiding the dressing table
and money box.
These killers will be rounded up and locked up. The perfect
pretext for to launch a a full scale war fuelled by blind
nationalism.