MADRID/ ISTANBUL  A minority right-wing government established in Portugal around 11 months ago collapsed on Tuesday, following failure to gain enough votes in a confidence motion in Parliament due to corruption allegations against Prime Minister Luis Montenegro. This marks the second time since the end of the dictatorship and the return of democracy in 1974 that a government has fallen in a confidence vote, the first being in 1977, 48 years ago. The reason for the collapse of the right-wing