Investors poured $3.5 billion into scooter and bike-rental startups globally in the first half of 2018, according to data firm CB Insights, even though basic issues such as how cities will regulate the motorized two-wheelers remain unresolved.

The committee found "no unresolved national security concerns" with the proposed deal, Genworth said.

A study by the Beijing-based China Council for the Promotion of International Trade found that although many parties, including the government branches, export-oriented manufacturers and shipping container suppliers, had all intensified their efforts to resolve the tight container supply and meet the demand for containers from China's exporters in 2021, tight transportation capacity and high freight rates remain unresolved issues.

Are there any new situations emerging, or existing issues left unresolved?

But if trade agreements are insensitive to unresolved problems that would create "fertile ground" for nationalism, it's important that countries do not shy away to identify the problems that need to be solved, she noted.

The dispute remains unresolved so far, as the data cannot be verified.

Tesla and the protester has a unresolved dispute about whether the crash was the result of a brake failure, and the data around the time of the crash that Tesla has made public is yet to be verified.

And there is the unresolved business of Nissan's fractious alliance with Mitsubishi Motors and Renault.

A pay increase is the main unresolved issue, as the company agreed to continue to pay healthcare premiums while workers are on picket lines.

Companies could continue to invest in "legacy" chip manufacturing in China, but the definition of that term is unresolved.

Despite great progress, we still have some unresolved data-related problems, which will become increasingly serious.

Even so, the brinkmanship that both parties have been accustomed to has turned the debt ceiling issue into a "time bomb" that threatens the US and the global economy, while the deep-rooted debt issue remains unresolved, which has the mainstream media and experts from around the world worried.

The unresolved audit supervision dispute between Chinese and US regulators has slowed Chinese companies' listing pace in the US.

On June 9, however, Genworth Financial Inc and China Oceanwide Holdings Group Co said that CFIUS had completed its review of Oceanwide's $2.7 billion buyout and found "no unresolved national security concerns" with the proposed deal.

If debt problems remain unresolved, this will affect the overall health of the economy", Li said.

Under the guidance of President Xi Jinping's water management strategy of "prioritizing water conservation, balancing spatial distribution, taking systematic approaches, and giving full play to the roles of both government and market", Li said, China has made historical achievements in water resources management and solved many long-standing water management challenges that had previously remained unresolved.

"Some tough problems that impeded reform and development and remained unresolved for a long time have been rectified," he said.