John Hopewell Chief International CorrespondentMarking further dynamic expansion, ViacomCBS International Studios (VIS) and Ricardo Siri Liniers, Argentina’s best known cartoonist and children’s book author-illustrator, have announced they will adapt Liniers’ latest graphic novel, “Wildflowers.”The project rolls off a development deal between VIS, ViacomCBS’ global production arm, and Liniers that was announced by VIS Kids at Kidscreen in February.