Twenty national scientific and research organizations from countries and regions along the Belt and Road Initiative issued a declaration on Tuesday, establishing an alliance of international scientists to promote cross-border cooperation.

The declaration was made after a two-day forum attended by more than 350 scientists from 40 countries and regions.

"The declaration not only represents the scientists' and research organizations' willingness to strengthen international cooperation among countries and regions along the Belt and Road Initiative, but also includes mechanisms that will enhance cooperation," said Tan Tieniu, vice-president of the Chinese Academy of Sciences, which co-organized the forum.