According to the study, those in advanced countries are less optimistic about trade with other countries.
The gross merchandise value of cross-border e-com to grow close to $1 trillion by 2020, from $300 bn in 2015, according to UNCTAD estimates
The recent tussle between member-nations over the dispute settlement system at the multilateral body also has to be addressed
World Trade Organization said commerce is expected to grow by 3.6% in 2017, well above last year's figure of 1.3%