“Ambassador of peace has two wings of art and science...”

Advancement of science and art is only achievable by the cooperation of researchers and artists from all over the world as a global movement. Pity and sad that mental darkness draw us borders, which only results in irreparable damage in near future for all of us. To encounter the racist and offensive statement of Mr. Trump, from now on; we as Iranian academicians and international researchers deny to participate in any scientific conferences and exchange of academic papers in United State of America. Of course, this lack of participation ensconced refrain from exchanging scientific information from discussed and pointed seven countries by Mr. Trump, does great damage to the main body and concept of research.