[4][5] The sultan preferred Ahmed's plan, but at the same time permitted Piri to besiege Belgrade with a small portion of the army.

[6] The sultan then ordered Piri to lift the siege in Belgrade and join the bulk of the army as he started to build a bridge to cross the Sava.

However: Piri, who had conquered Zemun and was besieging Belgrade with a small portion of the army, refused to lift the siege.

The Hungarian nobility was divided into numerous parties, and without a strong central government it could not unite in defense of the country.

The lower nobility clashed with the higher nobility and court circles, and the Voivode of Transylvania, John Zápolya, one of the wealthiest greats of his time, represented open opposition to the already weak regime of King Louis II.

On such occasions, it was not possible to strengthen the defense system at the southern border and to undertake any military campaigns.