Before setting out Departing for Italy , Skanderbeg forged a truce Process_end with Sultan Mehmed II .

Mehmed saw an opportunity to attack Attack Skanderbeg and sent Sending three armies in one year .

The attackers Attack were commanded Control by the 21-year-old Sultan Mehmed II , who defeated Conquering an army commanded Control by Emperor Constantine XI Palaiologos and took Getting control Control of the imperial capital , ending Process_end a 53-day siege Besieging that had begun Process_start on 6 April 1453 .

After conquering Conquering the city , Sultan Mehmed transferred Change the capital of the Ottoman State from Edirne to Constantinople and established Creating his court there .

In 1452 , the newly acceded Agree_or_refuse_to_act Ottoman Sultan Mehmed II ordered Request his first campaign against Skanderbeg , the chief of the League of Lezhë .

Shortly after the First Siege of Krujë , Murad II died Death in Edirne , only to be succeeded Change_of_leadership by his son Mehmed II .

Mehmed always supported Supporting more aggressive strategies of conquest Conquering which his father had continually rejected Response .

Once in power , Mehmed ordered Request nearly annual invasions Attack of Albania which often resulted in Causation multiple battles Hostile_encounter in one year .

Realizing Coming_to_believe his opportunity , Mehmed ordered Request an invasion Attack of Albania .

With the end Process_end of the half-century-long Crusader threat Warning to their European frontier , Murad 's son Mehmed II was free Releasing to lay siege to Constantinople in 1453 .

Sultan Mehmed II had come Arriving out of his recent campaigns Military_operation victorious , adding large swaths of lands to his domains .

The failure Earnings_and_losses of his generals to beat a tiny army rendered Mehmed II to deal Communication with Skobaljić personally .

The campaign was so important to Mehmed II `` the Conqueror '' that he came Motion personally to ensure triumph .

With dwindling resources , Mehmed attacked Attack and defeated Conquering the smaller surrounding fortresses of Žabljak Crnojevića , Drisht , and Lezha , left Causation a siege force to starve Bodily_harm Shkodra into surrender Surrendering , and returned Arriving to Constantinople .

In 1454 the Ottomans launched Process_start a major invasion Attack against Serbia , at the helm of which was the Sultan himself , Mehmed the Conqueror Conquering .

On the Morava River , sultan Mehmed II left Feriz Bey and 32,000 of his troops to resist Defending any possible counterattacks Attack by the Serbs south of Kruševac .

Nikola Skobaljić continued Process_start his forays Attack against the Ottomans , operating Being_in_operation between Leskovac and Priština , and won several major victories against the armies of the sultan , until Mehmed himself came to confront Hostile_encounter him at the Battle Hostile_encounter of Tripolje ( near Novo Brdo ) .