open city; defenseless city
international law in time of war
rules are rules; a rule is a rule
silver hair; gray hair; grey hair
to pile up; to heap up; to stir up; to enliven; to bring to a climax
marine; maritime; oceanic; oceanity
high temperature and humidity
nth generation; nth (person to occupy a position, e.g. president)
long-serving soldier; veteran
the fate of a nation; life-or-death (situation) for a nation; national crisis
older sister; elder sister
cruising range; flying range
business jet; private jet
conifer forest; coniferous forest; needle-leaved forest
battle flag; standard; (regimental) colours; colors; ensign
tiger (feline, Panthera tigris)
pursuit plane; chase plane
running through (north-south); cutting across; travelling across; cutting vertically; sectioning longitudinally
airspace incursion; airspace violation
dispatch of troops; despatch of troops; expedition
incoming telephone call; telegram received
important matter; requirement; requisite; necessary condition
the instability of a political situation; political instability