obstacle

Some of the biggest obstacles facing Germany’s military planners are intangible: ponderous procurement rules, onerous data protection laws, and other regulations forged in a more peaceful era.

“Try to have flexibility in case of scheduling conflicts, travel delays, traffic, illness, cancellations, schedule changes and other unexpected obstacles.”

Although the mouse results are encouraging, significant obstacles remain before this strategy could be widely used to treat Type 1 diabetes.

Two major obstacles held it back: most manganese complexes required a long, complicated synthesis involving nine or ten steps, and they typically had very short excited-state lifetimes.

By contrast, firms that import food products do not encounter such obstacles and also "often manage to circumvent tariff barriers" that they should face, Nkelane said.