Manila, Nov. 4 -- Department of National Defense (DND) Secretary Gilberto Teodoro Jr. has met with former Central Intelligence Agency (CIA) chief David Petraeus and discussed possible collaboration as well as the evolving nature of modern warfare.

In a social media post late Monday, the DND said the two discussed potential collaboration in defense technology and industry.

"The meeting explored partnerships and strategic investments to strengthen the country's defense capabilities and support the modernization of the Armed Forces of the Philippines," it said.

Petraeus is now chair of leading investment firm Kohlberg Kravis Roberts & Co. (KKR), which has about USD2 billion investments in the Philippines, according to the DND.

"General P...