Turkey's military says it is planning to spend $1 billion (euro680 million) on four long-range missile defense systems, AP reported.

Brig. Gen. Metin Gurak, the Turkish military spokesman, says the procurement is not directed at any specific country. Turkish Foreign Minister Ahmet Davutoglu denied media reports that Turkey is buying missile interceptors against Iran.

Friday's announcement comes a day after U.S. President Barack Obama canceled a long-planned missile shield for Eastern Europe, replacing a Bush-era project that was opposed by Russia with a plan he contended would better defend against Iranian missiles.

The Defense Ministry said Chinese, Russian and American companies have been invited to present proposals.