<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"><span style="font-size: 12.8px;">World Trade Organisation Chief Roberto Azevedo warned  against a damaging escalation of trade tensions between the United States and other major economies, following a divisive G7 summit. Mr Roberto said, the trade war would have a long term impact on the global economy. He said this, at a Berlin meeting with German Chancellor Angela Merkel and leaders of the IMF, World Bank and other international institutions.<br />''<br />''</span></div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;">Mr Rroberto said  the tit-for-tat process is not going to be helpful and new sectors will be brought into the picture, which is something that will harm everyone.<br />''<br />''</div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;">The EU has vowed to retaliate against US metal tariffs imposed by US President Donald Trump, and tensions worsened at a Group of Seven summit in Canada after Trump rejected an attempt to write a consensus statement.</div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"><span style="white-space: pre-wrap;"><br />''</span>The joint communique which Trump rejected had vowed that G7 members would reform multilateral oversight of commerce through the WTO and seek to cut tariffs.</div>