Philippines president Rodrigo Duterte has bragged about Russia and China supplying him with firearms after the United States turned down his request.

Speaking in Manila on Thursday, Duterte slammed the US government for blocking a planned sale of arms – and suggested the CIA is targeting him.

'The fact is, the Americans really do not honour their word,' he said, according to Al Jazeera.

'At least, if my airplane ever explodes, or if some roadside bomb explodes, maybe you can ask the CIA.'

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Philippines president Rodrigo Duterte (pictured in March) has bragged about Russia and China supplying him with firearms after the United States turned down his request

Duterte has been seeking to acquire weapons in a bid to step up the fight against Islamists since he took office in June 2016.

But the US refused to provide assault rifles amid concerns over the Philippines' human rights record.

As a result, he turned to China and Russia to provide the weapons – and some were given for free.

The US refused to provide assault rifles amid concerns over the Philippines' human rights record. Pictured, President Duterte on Thursday

After Duterte visited Moscow in May last year, Russia sent a shipment of weapons to the Philippines, RT reports.

In October, around 5,000 Kalashnikov rifles and around a million rounds of ammunition were donated by Russia – as well as 20 military trucks.

China donated thousands of rifles and ammunition as a gesture of friendly relations in June and October last year.

But Duterte insists that there is no military alliance between the countries.

'To this day, Russia and China have yet to even ask for a piece of paper or pencil.'