An Indian man cycles past parked Indian trucks carrying goods to Nepal near the India-Nepal border at Panitanki, some 40 kms from Siliguri on September 29, 2015. AFP

AFP/Kathmandu

A senior Nepali lawmaker, tipped to be the next prime minister, on Wednesday accused neighbouring giant India of breaking international law by deliberately halting cross-border trade, forcing the landlocked nation to ration fuel.
Since last Thursday, members of an ethnic minority living in Nepal's southern plains have blocked a critical trade route into the country from India in protest over the new constitution adopted on September 20.
Officials say cargo movement through other border checkpoints has also declined sharply since last week, sparking fears of a fuel shortage and long queues at petrol stations.  
K.P. Oli, chief of the ruling UML party, said the Indian government, rather than demonstrators, was responsible for the border stoppage, in an unofficial protest over its dissatisfaction over the constitution.
His comments reflect mounting public anger in Nepal where many accuse India of being behind the blockade. New Delhi has denied the allegations and urged dialogue with the protesters to end the stand-off.
"India is saying those people (protesters) are in no man's land, they are blocking the roads so (Indian trucks) are not being able to supply, that's not true," he said.
"There is no gas, no vegetable supplies, no fuel for vehicles, no fuel for airlines, and life is about frozen," Oli told AFP in an interview.
"We don't want this type of friendship."
"India should not violate the treaties and agreements between our two countries, one. Second, India shouldn't undermine and violate the international norms and rights of the landlocked countries in general."
More than 40 people have been killed in clashes between police and protesters representing ethnic minorities who say a new federal structure laid out in the constitution will leave them under-represented in the national parliament.
New Delhi, fearing instability on the border, has criticised Nepal for rushing the constitution rather than resolving the concerns of the minorities, many of whom have relatives living in India.
Oli is seen as the top candidate when parliament votes on a new prime minister to head the government in coming weeks in the wake of the constitution's adoption.
His comments signify a stronger stand against India which has traditionally exerted significant political influence in Nepal.  
The Indian Oil Corporation is the sole supplier of fuel to Nepal.
As cross-border trade slowed to a crawl, with hundreds of trucks backed up at checkpoints in the plains, home to half the country's population, Nepal this week began rationing fuel and decided to limit the number of vehicles allowed on the roads.
The new constitution, Nepal's first to be drawn up by elected representatives, is the final stage in a peace process that began when Maoist rebels laid down their arms in 2006 after a decade-long insurgency.
Work on the new constitution began in 2008 after the Maoists won parliamentary elections and abolished the monarchy. But power-sharing squabbles between parties stymied progress.
Lawmakers finally reached agreement in June this year, spurred by a massive earthquake two months earlier that killed nearly 8,900 people.