Turkey on Saturday dismissed as "out of the question" claims from Russia that it had allowed U.S. warships to stay longer in the Black Sea than permitted under international law.

Russia has complained that U.S. warships have remained in the Black Sea longer than the 21 days allowed by an international treaty, amid ongoing tensions between Moscow and the West.

Turkey's prime minister said Saturday he will "go after" Twitter, accusing the site of tax-evasion, after it was used to spread damaging leaks implicating his inner circle in corruption claims.

In a televised speech, Recep Tayyip Erdogan also launched a tirade against the nation's highest court for ruling against a ban on Twitter, charging that it put the rights of businesses above that of Turkey's.

Turkey's constitutional court on Friday overturned sections of a controversial judiciary reform adopted in response to a corruption scandal roiling the government, local media said.

The court said the most controversial clause of the law, giving the justice ministry greater control over the appointment of prosecutors and judges, was unconstitutional, private NTV television reported.

Turkey's government on Thursday said it would keep its block on YouTube in place despite two separate courts ordering the ban be lifted.

In a statement, Turkey's Information and Communications Technologies Authority (BTK) said the ban would remain as illegal content was still available on the video-sharing site.

A charity at which Turkish Prime Minister Recep Tayyip Erdogan's son sits on the board, received more than $100 million of aid over a four-year period, the government said on Thursday amid graft claims roiling the government.

In a written answer to a parliamentary question, Deputy Prime Minister Bulent Arinc said that Turgev received $99 million (72 million euros) of financial aid from abroad between 2008 and 2012.

Turkey's top elections authority on Wednesday rejected a bid by the country's main opposition party to annul a controversial mayoral vote in the capital Ankara, local media said.

The Supreme Electoral Board unanimously rejected the request from the Republican People's Party (CHP), which alleged the incumbent Justice and Development Party (AKP) had won by rigging votes.

The leader of Turkey's main opposition party was attacked as he entered parliament Tuesday by a stranger who punched and kicked him several times, local media reported.

The assault occurred as Kemal Kilicdaroglu, the head of the secular Republican People's Party (CHP), was heading to a weekly party meeting to assess results of local polls on Sunday that were handily won by the ruling Justice and Development Party.

Turkish Prime Minister Recep Tayyip Erdogan, emerging triumphant from last weekend's local polls, renewed his pledge of war against rivals he blames for illegal wiretaps and graft claims targeting his allies.

"All the culprits will go before the law" Erdogan said in his party's first parliamentary meeting since last Sunday's elections that gave the ruling Justice and Development Party (AKP) sweeping wins.

YouTube has appealed to Turkey's Constitutional Court to lift a ban the government slapped on the video-sharing service after audio of a top-level security meeting was posted on the site.

The appeal asks the court to "immediately" lift the ban on the site, a source familiar with the case told Agence France Presse Monday on condition of anonymity.

Turkey's opposition called Sunday for an annulment of last weekend's mayoral vote in the capital Ankara, alleging fraud by the ruling Justice and Development Party (AKP).

The Ankara electoral board had on Friday rejected a bid for a recount by the Republican People's Party (CHP) of last Sunday's poll, which was narrowly won by the AKP incumbent.