Pakistan is a paradigm example of a failed state that has undergone an extremely dangerous form of radical Islamisation.
Battle of Talikota
After the death of Achyuta Raya in AD 1541, his son Venkatadri or Venkata-I
ascended the throne, but could not reign long, and within six months the crown
was passed to the nephew of Achyuta - Sadasiva. Sadasiva Raya was a mere puppet
in the hand of his minister Rama Raya of the Aravidu dynasty. Rama Raya was able
to restore the power of Vijayanagara, which had sunk after Krishna Devaraya's
rule. The important policy of Rama Raya was to interfere in the quarrels among
the Deccan Sultanates, in alliance first with one, and then with another.
He indeed was successful for the time being. This made him over confident and
ultimately proved fatal. Meddling into the affairs of the Muslim states led to
the combining of all the Muslim states against the Hindus and the combined
forces faced each other in the Battle of Talikota. It was one of the most
decisive battles in Indian history like the Panipat and the battle of Plassey.
Hopes of Hindus were totally shattered with the defeat and the south India was
once again opened for Muslim penetration till Marathas slowly rose to power.