China said Tuesday sanctions and pressure cannot fundamentally resolve the Iran nuclear issue while reiterating its adherence to a dual-track strategy.

"China upholds its consistent stance on the Iran nuclear issue. We support the international nuclear non-proliferation system, maintain the peace and stability in the Middle East, oppose Iran having nuclear weapons and support a dual-track strategy," Foreign Ministry spokesperson Jiang Yu told a regular press briefing Tuesday afternoon.

"China has always believed that sanctions and pressure cannot fundamentally resolve the issue, and dialogue and negotiation are the best ways," she noted.

Jiang added the actions taken by the U.N. Security Council should help ease the situation, and help promote the relevant sides to properly resolve the Iran nuclear issue through dialogue and negotiation.

In the on-going Nuclear Security Summit, China has called on various parties to continue to step up diplomatic efforts and to actively seek effective ways to resolve the issue through dialogue and negotiation.

"China will always actively join in the diplomatic efforts of the international community to resolve this issue," Jiang said

She told the press China has and will continue to participate in relevant U.N. Security Council discussions and seek diplomatic ways to solve the nuclear issue.