If one looks at the region, who has superior fighters? The F-15s
are more than adequate to handle the
current/potential russki-based threats. The funny thing is
that some people swallow the propaganda about how good certain
contemporary a/c really are but fail to realise that the
F-15s not only matches their strengths but excels in a lot of other
areas.
On cost, the F-15s replace older a/c on a several to one
ratio. RSAF currently only bought 1 sqn of
F-15s. There are already cost savings in terms of
infrastructure, pilot training etc.
As to requirement, if one argues that Singapore doesn't
need to defend its airspace, then of course, any fighter is a waste
of money.
If one thinks that Singapore needs to defend its airspace,
then the most cost-effective fighter is needed. A
fighter that can excel in several roles is cost-effective. One
cent money = one cent effectiveness. Singapore is a small country
with a limited defence budget. Other bigger countries may be able
to afford dedicated fighters and yet provide their
armies with other kinds of support, but can
Singapore?
Especially the latest F-15s with AESA that the US is refitting
to their fleet.
Limited defence budget- not exactly. The defence budget has been
holding steady as a % of GDP. It used to be 25% and if encessary,
we'll bring it back up again.